Re: [PATCH v2] AHCI: fix Null pointer dereference inachi_host_active()

[Tejun Heo]

On Tue, Jul 23, 2013 at 11:54:10AM +0800, Xiaotian Feng wrote:
> commit b29900e6 (AHCI: Make distinct names for ports in /proc/interrupts)
> introuded a regression, which resulted Null pointer dereference for achi
> host with dummy ports. For ahci ports, when the port is dummy port, its
> private_data will be NULL, as ata_dummy_port_ops doesn't support ->port_start.
> 
> changes in v2: use pp to check dummy ports, update comments
> 
> Reported-and-tested-by: Alex Williamson <alex.williamson@xxxxxxxxxx>
> Signed-off-by: Xiaotian Feng <xtfeng@xxxxxxxxx>
> Cc: Alexander Gordeev <agordeev@xxxxxxxxxx>
> Cc: Tejun Heo <tj@xxxxxxxxxx>
> Cc: linux-ide@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx

Applied to libata/for-3.11-fixes.

Thanks.

-- 
tejun
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